<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<script type="text/javascript">
		function  changeImage(img){
		
		img.src = img.src + "?" +new Date().getTime();
		}

</script>

</head>
<body>

	<font action=""> 用户名:<input type="text" name="username"><br />
		密码:<input type="password" name="password"><br /> 认证码:<input
		type="text" name="checkcode"><br /> <img
		src="/servlet_pro/ResponseDemo04" onclick="changeImage(this)" alt="换一张" style="cursor:hand"><br/> <input
		type="submit" value="注销">
	</font>


</body>
</html>